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(the full acronym is useful kinetic energy coefficient and is written коэффициент полезной деятельности, or к.п.д. in Russian):

the amount of useful activity or work output a person can achieve in a given amount of time
it is time to increase your u.k.e.c. you d.l.m
u.k.e.c by Uncle Dimma February 8, 2017

f u c k e r 

"a fucker"
f u c k e r by Jack an' Jill December 2, 2003

F-u-c-k-e-r 

Someone who sleeps around with anything, this is including their same sex. They are usually sexually frustrated and even when they have a partner they cheat on them, this is why everybody calls them f-u-c-k-e-r-s this is very suitable as they make peeps lives miserable!
Tom had a girl but he all ways cheated on her with his m8
F-u-c-k-e-r by Me December 5, 2003

b u c k e t 

modern object go yeet, this is a bucket, not big surprise, spade intensifies, will this get accepted, roblox dot com, probably not, why am i here, aaaaa, bbbbb, ccccc, ddddd.
spade go crazy b u c k e t no use but the first person go spabuckespade waht this prob not accep.
b u c k e t by Chaosgamer March 11, 2019

D-U-N-K-A-D-E-L-I-C 

D-Determination U-Unity N-Nutrition K-Knowledge A-Athleticism D-Defense E-Energy L-Leadership I-Intimidation C-Champion
The D-U-N-K-A-D-E-L-I-C is the blueprint to becoming a champion.

K.m.k.m.w.u.e.c 

Kiss me kiss me with your eyes closed

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K.m.k.m.w.u.e.c
What does that mean

(◍•ᴗ•◍)❤
More from Urban Dictionary

Plate of Brown 

A plate of brown consists of foods that have little to no nutritional value, and are typically deep fried. A true plate of brown will also be accompanied by a dark soda.
Wanna go to meal hall & grab a plate of brown?
Plate of Brown by Cheddar Craigson September 18, 2020
Word of the Day on October 22, 2026

Larpenomics

When finance content creators rent out fancy cars and flex cash to seem richer than they really are in order to promote and sell their “get rich quick” courses.
Andrew Tate has mastered the field of larpenomics
Larpenomics by Rbois09 October 21, 2026
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Palmela Handerson 

Your hand that you masturbate with.
Girlfriend: What are you going to do for the next week while I'm on holiday?

Boyfriend: Have a visit from Palmela Handerson of course!
Word of the Day on October 20, 2026
x:"Girl your fit chewed today!"
Chewed by iod1o March 30, 2022
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Blue Movie 

A pornographic film.

The use of the word "blue" to refer to sexually explicit content was first recorded in Scotland in 1824. "Blue" meant "lewd" because prostitutes dressed in blue gowns.
I found your stash of blue movies under your bed.
Blue Movie by Shayde79 January 20, 2011
Word of the Day on October 18, 2026
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